A006383 - OEIS

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A006383 as a simple table

n	a(n)
0	1
1	1
2	3
3	7
4	41
5	299
6	6128
7	343656
8	67013431
9	45770163273
10	108577103160005
11	886929528971819040
12	24943191706060101926577
13	2425246700258693990625775794
14	820270898724825121532156178527106

[1,1,3,7,41,299,6128,343656,67013431,45770163273, 108577103160005,886929528971819040, 24943191706060101926577, 2425246700258693990625775794, 820270898724825121532156178527106]